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ISLAMORADA (CBSMiami/AP) — After delays caused by the partial government shutdown in 2013, the grandson of ocean explorer Jacques Cousteau is about to spend 31 days at an underwater research laboratory in the Florida Keys.

Like viewers worldwide, Fabien Cousteau was entranced by his famous grandfather’s films about marine life and human exploration underwater. Now he’s adding to his family’s sea stories with a 31-day underwater expedition.

Cousteau is set to dive Sunday to Aquarius Reef Base, a school bus-sized laboratory 60 feet below the ocean’s surface, a few miles off Key Largo. He plans to spend more than a month living underwater with a five-person crew, making a documentary and leading science experiments on the nearby coral reef.

The idea for “Mission 31″ came to Cousteau two years ago when he visited Aquarius during a fundraising push to save the lab, which federal budget cuts had threatened to permanently close.

“It reminded me that I’ve always wanted to live underwater,” Cousteau said Saturday at his training base in Islamorada.

“Mission 31″ builds on the legacy of Conshelf II, the 30-day underwater living experiment in the Red Sea that Jacques Cousteau filmed in 1963 for his Oscar-winning documentary “World Without Sun.”

The younger Cousteau can do something his grandfather could not: broadcast the entire adventure live online and communicate with the public through social media and video chats with classrooms on land.

“For the first time I’m able to invite the world on a Cousteau expedition in real time,” said Cousteau, who has filmed documentaries on sharks and other marine life.

Jacques Cousteau was revered worldwide for exploring the ocean in a multitude of documentaries and books, as well as for pioneering the advanced scuba diving techniques used at Aquarius. While he developed underwater living experiments out of the belief that an overpopulated world might drive humans to live in the oceans, interest in the habitats waned through the decades until Aquarius was the last underwater research lab.

His grandson believes interest in the oceans is reviving as climate change threatens to disrupt life on land.

“Whether you care about economics, in your personal life or your business life, whether you care about your health or your child’s health, whether you care about saving creatures, it all pertains to making sure that our oceans are healthy. And our oceans are not,” Cousteau said.

Throughout the expedition, Florida International University and Northeastern University researchers will study the effects of climate change and pollution on the coral reef. The crew will experiment with new technology that uses sonar to create three-dimensional video images, allowing them to gather data and footage without lights that would disrupt the fish.

The 400-square-foot pressurized Aquarius lab has six bunk beds and allows scientists to live and work underwater and scuba dive for extended periods of time, without needing to return to the surface or decompress. It’s owned by the U.S. government and operated by FIU.

Astronauts train at Aquarius to simulate living and working in outer space. The lab’s technological edge doesn’t extend to its kitchen area. “Unfortunately for me as a French person, the food also will be simulated. Freeze-dried, astronaut type of food, canned foods, things like that,” Cousteau said, grimacing.